Biology of SARS‑CoV‑2

SARS‑CoV‑2 is a virus that, starting in 2020, has caused the largest global pandemic in recent history. The disease caused by this virus, called COVID‑19, has affected millions of people worldwide. Watch these animations to learn about the biology of SARS‑CoV‑2, including how it infects and replicates in human cells, how it evolves, the tests used to detect it, and how the vaccines for it work.